Best place to exchange money in Poland?

I wouldn't be shocked if Transferwise goes bust spectacularly. There's a lot of questions over Estonian banking right now with the Danske Bank money laundering there, and I remember when another one went bust - Crown Currency Exchange. The rather loathesome "Money Saving Expert" Martin Lewis was heavily pushing them, and a lot of people lost cash because of that. He never once apologised for getting it wrong, as well.

It's got a lot in common with 'multi level' scams. When you get random strangers promoting it online (including here), always but always with a link to click on that should be a warning sign. The 'referral bonus' has to be paid for somehow, and it's the customer who absorbs the cost of their marketing scheme.

I do recommend WorldFirst here, having used it myself for several years. I don't get paid for it though. No 'referral bonus', no 'fees' for doing an exchange and the cash is in a Polish bank account sometimes within minutes. It's saved me a lot of money over the years, especially when I was paid in dollars.

When you get random strangers promoting it online (including here), always but always with a link to click on that should be a warning sign.

Yup, it was understandable in the beginning, but now it's just become a pyramid scheme. They're actually quite expensive for larger amounts, especially as in my experience, Polish banks will negotiate hard if you want to exchange large amounts of cash. I've once seen the bank offer 0.3gr over the interbank rate at that minute, which blew Transferwise out of the water.